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Physics Past Questions and Answers

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Physics Questions

Question 31:

In order to convert a galvanometer into an ammeter

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A A low resistance shunt is connected in parallel
B A low resistance shunt is connected in series
C A medium resistance shunt is connected in series
D A high resistance shunt is connected in parallel
E A high resistance shunt is connected in series

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Question 32:

In a D.C. circuit, a 10 microfarad (mf) capacitor is placed in series with a 10 0hm resistor. The total resistance of the combination is

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A 10 ohms
B 1 ohms
C Zero
D 20 ohms
E Infinite

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Question 33:

On an a.c generator, which of the following does not apply?

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A Field magnet
B Commutator
C Armature
D Slip rings
E Carbon brushes

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Question 34:

Why is it impossible for the lines of force of an electric field to cross one another?

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A Like charges repel each other
B A charged particle is deflected by an eletric field
C Like charges are arranged on the same line of force
D A positively charged particle can travel in only one direction at any time
E None of these is correct

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Question 35:

A potential difference of 6v is used to produce a current of 5A for 200s through a heating coil. The heat produced is

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A 4800 cal
B 6000 cal
C 2400J
D 240k cal
E 6000J

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